Operating and control mechanism for door closures



Jan. 8, 1929. 1,698,362

P. J. DUGAN OPERATING AND CONTROL MECHANISM FOR DOOR CLOSURES Filed June 6, 1927 2 Sheets-Sheet 1 INVENTOR B Y M 1 ATTOR Y5 1,698,362 P. J. DUGAN OPERATING AND CONTROL MECHANISM FOR DOOR CLOSURES Filed June 6, 1927 2 Shgets-Sheet 2 3/ 32 m J7: /e 27 Jan. 8, 1929.

Patented Jan. 8, 1929.

OPE-RATING AND ooNTnoL MECHANISM non noon onosonn's.

Application filed June 6,

This invention'relates to doorclosures and particularly to closures for elevator hatchway doors.

It is particularly desirable that elevator hatchway doors be so constructed andcontrolled that they can he easily and'quiclrly opened and closed. Furthermore, it is desirahle that hatchwayxloors he so controlled that they cannot be opened unless a car is positionecl at the floor level and also that the car and doors he so in tor-controlled that the car cannot "leave a floor level when the door at that level'is open. It'is also desirable that the doors he so actuated and controlled that they will not open and close with a jar or ban "since this tends to rack the doors and also the actuating'and control means.

Oneof the obj ects of the invention is to provide simple and practical control mechanism "for hatchway door closures so "constructed and arranged that no door can he opened unless the elevator car is positioned at the floor level at which the door is located.

Another objectof the invention to provide operating and control mechanism for hatchway doors so arranged that the closing of a single switch will effect the opening or closing; of the door. x

Another objector the invention is "to provide operating and control Mechanism and hatchivay doors so arranged that the'closing of a single switch will eflect the unlocking and opening or closing and locking of the door.

Another object of the invention is to provide control means whereby the elevator car cannot be operated when a hatchway door is open. Another object of the invention is to provide simple, practicziland eificient door actuating niechani'sin for moving the door to open and closed position. 7

Another -object of the invention is to provide-door opening and closing mechanism so constructed and arranged that the door will he cushioned at both extremes of its move ment.

Furtherohj ectsof the invention will appear from the following specification taken in connection with the drawings, which form a part of this application, and in which Fig. 1 is a diagrammatic view of a door 192?. Serial nc. "196,677.

closure mechanism and control circuits constructed inacc'ordan'oe with-the invention Fig.2 is :a sectional elevation showing door actuating means for moving the door to open or closed positionyand I r Fig. 3 *isa view similar 'to lg. Qhu't showing "a slightly modified form of the invention. The invention brie'fi 'descriheidc'onsists of actuating mechanism 'or moving the door to open or closed position, locking means for locking the door in 'closed position and intercontrol means between the car control circuit and-door actuating mechanism whereby a hatchway door cannot he opened unless a car is positioned at the *floor level at which the door is located' and-the car cannot beoperated when a hatchway door is opened. In the form of the invention illustrated, the closing of a single switch-effects the unlocking of'the door and the movement of -the door to open position, and the closing of a second switch wi l'l eifect *tl'ie closi-ng and locking of the door. The circuits are so arranged that when the door moves to either extreme position, namely, to 'wide open or closed position, the

circuit which has-effected the opening of the dooror theclosing-of the door w'ill be'opened. Moreover, thedoor opening circuit is so arranged that this circuitoannot be closed unless a 'caris disposed at the fioo'r level where the door is looatedfand also "the unlocking of the door 'willbre'ak theca'r cofitrolcircuit so that thec'arcann'ot he operated until thedoor' is again closecl'and locked. I

The particular door actuating ineolianisin illustratedconsists of oppositely acting telescoping" solenoids so arranged that when one or the solenoid circuits is closed the door will be moved in one direction and when the other solenoid "circuit is closed the door will be moved in theopposite direction. Further details of the invention will appear from the following description.

In the emhodiment of the invention illustrated'in Fig. 1 were are shown a o'f elevator hatchvvay doors A and "B positioned at "two different "fioor levels. It will be understood, of course, that the invention is applicable to any desired number of floor "levels and the circuits will be the sainel foreach 'tloor level.

The doors A and B are slidably mounted on the usual tracks and are moved by the mechanism and control circuits hereinafter described from the closed position illustrated to open. position.

D007 actuating mechanism.

In the form of the invention illustrated in thedrawings, the door actuatingmechanism consists of a pair ofoppositely acting sol e noids 10 and adapted when energized to i move the door to closed and opened position. Each solenoid has the usual solenoid windend slidably mounted in the casing 15 anda ing' 11 and the coreof each solenoid consists of a plurality of telescoping sections 12,13 and is secured tothe central portion of" the i 25 closed end 17 in casing 15 and the valve casinghas a port 26 controlled by an inwardly seatingballcheckvalve27 and also has a port. 28, the size of the port 28 beingcontrolled by an adjustable needle valve 29.

Thesleeve 12 has a flange .30 at its inner backingwasher 31" is secured, between the flange and a collar 32threaded on the inner end of the sleeve 12.

The sleeve 12 has a bearing ring 35 formed of brass or other non-magnetic material secured withinits outerend and forming a bearing for the sleeve 13. The sleeve 13 has a collar 36 .of non-magnetic material secured to its other end and slidably mounted within the sleeve 12. p

. The sleeve 13 has secured within its outer end a bearing ring 37 ofnon-m'agheticmate rial which forms'a bearing for the inner section 14c of the solenoid core. One end of the core section 14 has mounted thereon a nonmagnetic collar40 which is slidably mounted in the sleeve 13'.

- The other end of the inner section 14 of the corehas mounted thereon a collar of nonmagnetic material which is slidably mounted in the inner sleeve of the-oppositely acting solenoid. Since both oft/the solenoids are constructed nexactly thesame manner the description of theother solenold need not be described in detail.

A bar is secured to and extendsupwardly from the central portion of the hatchway door and is secured at its other end as shown at 51 to the central portion of the inner section 14 of the solenoidcore. 1

y Foreonvenience in referring to the oppositely acting solenoids, they have been indicated on the drawings as "C and D. In Figs. 1 and 2 the solenoid C has been energized and the core sections have been telescoped, thus moving the door to the right or to closed position. In orderto open the. door the solenoid D must be energized, whereupon the telescoping cross sections of solenoid D. will be drawn within the solenoid coil, thus effecting the movement ofthe door to the left 'or toopen position; lVhen the dooris moved tothe left or is openedythe ball check valve 27 of solenoid C will be closed and air will be admitted to the casing 15 through the restricted inlet port 28 which is controlled as to size by the the solenoid D move out of the solenoid winding or coil,their movement is controlled by needle valve 29. As the solenoid sections of the restricted admission of air'to 'thecasing tions of one solenoid out of the solenoid winding the sections of the other solenoid core will move into the casing on which thewinding is positioned and during this operation the checkvalve secured to that casing will open and pcrmitthe emission of air therefromr In Fig. 3 a slightly different form of cushioning mechanism is illustrated. In this form .15 andthe door is cushioned in its movement. -Dur1ng the movement-of the telescopmg secof the invention the solenoid cores are formed 5 embodiment of the invention, but sleeves or sections 55 have one end closed as shown at 56. Thecentral section 57 of thecore 0011- .in three telescoping sections as in the other sists of ahollow tube having a restricted passage 58 at the longitudinal center thereof and l controlled as to size by a needle valve 59. Oil

or other suitable viscous material is" posithe sections 55, as for instance in the chamber formed in the section .55 of the solenoid .I).

When this solenoid is energized and the cross sections are telescoped, the oil or; other mate-. rial will'be forced through the restricted passage 58 of the central core section 57 into the chamber. formed in the'section 55 of the solenoid 0. Thus a cushioning efiect is obtained.

Dom" closure mechanism control circuits. In Fig.1 anelevator car is diagrammatically shown at E, The opening and closing of the. door is primarily controlled by a pair ofswitches 60 and 160. These switches may hoof the push button type or anyother desired form and they are normally held open by springs 61 and 161. Switch 60 has a .contact 62 connected by .Wllt'i 63 toa wire 64 which connected to the'positive side of a power circuit. The other contact 65 of the switch 60 is connected by wire 66" to a relay magnet coil 67 which in turn is connected by a wire 68'to a wire 69, the other end of'whieh is connected to the negative side 70 of a power circuit.

to a contact72 of a rela switch 73 controlled by the relay coil 67 T e other contact 7 4 of The Wire 68 is also connected by a w vire 71 0. tioned within the chamber formed in'one of through the solenoidwinding of solenoid D, and thence through the wire 96 and switch 147 to wire 148 and through wire 100, switch 77, wire 75,5Wltl1- 73, wires 68' and 69 to the negative side of the power circuit.

.' Thus, in the manner above described, upon the closing of the switch 60 the door will be "unlocked and the solenoid D will be energized,

' reaching tliis'position the lug 190 will engage causing the core sections of this'solenoid to telescope and throw the door to the letter to open position. WVhen the door reaches its wide open position the lug 90 will engage stud 89 and open switch 87, thusopening the solenoid circuit for solenoid D. i v

In order to close the door the switch 160 is closed and a circuit is then completed through wiresftii, 63, 163', switch 160, relay magnet 167, wires 168, 68 and 69 to the negative side or the main. Vhenthe relay switch 17 3 is closed in this manner a circuit will pass from wire 64 through wires 197 and 196 throughthe winding of solenoid G through wire 1%, switch 187, wire 175, switch 173, wire 171 and wire 69 to the negative side of the power main The energizingofthe solenoid C will cause the core sections thereof to telescope, thus moving the door to closed position. Upon stud 189 and open switch 187, thus opening the circuit through the winding of solenoid From the foregoing specification it will be evident that simple, practical and eilicient will effectively prevent theopening of a door means have been provided for actuating and" controlling the opening and closing ofhatch way doors. Furthermore, it will be clear that the useof the control mechanism described unless the elevator car is disposed at the level at which the door is located and will also prevent the operation of the car when a hatchway door is open. 1 v 7 Although certain specific embodiments of the invention have been particularly shown 7 and described, it will be understood that the invention is capable of niodilicationand that changes in the construction and in the arrangement of the various cooperating parts maybe made without departing from the spirit or scope of the invention, as expressed in the following claims.

operable by the door at its two QXiTGD'lGS of movement for opening said SOlGDOIClClI'CUltS.

. 2. Dooropei'ating mechanism comprising a door movable to open and closed positions, and means including pair of oppositelyacting solenoids-for moving said door to open and closed positions, said solenoids having non-electrical means controlled by the solenoid core for cushioning the door during its movement in either direction.

.7 3. Door operatingmechanism comprising a door movable to open and closed positions,

and means including a pair of oppositely acting solenoids i'or inovinglsaid door to open and closed positions, said solenoids having pneumatic means for cushioning the door during its movement in either, direction. 7

' L'DOOI operating mechanism comprising a door movable to open and closed positions,

means including a pairjof oppositely acting solenoids for movin i said door to open and closed positions, each of said solenoids having telescoping cores and cushioning means controlled by said cores for checking and cushioning the opening and closing movements of the door.

5. Door operating mechanism comprising a door movable to open and closed positions, means including a pair of oppositely acting,

solenoids for moving said door to open and closed positions, each ofsaid solenoids and cushioning means con'trolledjby said cores for checking and cushioning the opening and-closing movements of the; door having telescoping cores, the central core being common to the two solenoids. y i

' 6'. Dooroperating mechanism comprising a door movable to open and closed positions,

means including a pair of oppositely acting V V solenoids for moving said door to open and Closed positions, each of said solenoids having telescoping cores, the central core being com- Vmonto the two solenoids,and aconnect-ionbetween the central core and the door andcushioning means controlled by said cores for checking. and cushioning the opening and closing movements of the door.

7. In combination, a door movable to open andclosed positions, means torlocking the door n closed position, annelevator car, and

a switch adapted for connection in the car control circiiit,said switch being connected to said locking means and so constructed and arrangedfthat when the door is locked the switch is closed and when the door .is unlocked the switchis open and means controlled by the car for controlling said locking means. 7

8. In combination, a

gageablc with the door for locking the door in closed position, a solenoid for moving the door to open position, andnieans controlled by said lock for closingthe solenoid circuit" when the lock moves to unlocking position. i 9., In combination, a door movable to open and closed positions, a lock for'locking the door in closed position, a solenoid for moving 7 the doorto open position,- and means con trolled by said lock for closing thesolenoid door inovableto open and closed positions, a lockreleasably en:

circuit when the lock moves to unlocking position, and electrical operating means for releasing the lock.

10, In combination, a door movable to open and closed positions, a lock for locking the door in closed position, a solenoid formoving the door to open position, and means controlled by said lock forclosing the solenoid circuit when the lock moves to unlocking posit-ion, and means engageable by the door when it reaches wide open position for opening said solenoid circuit.

11. In combination, a door movable to open and closed positions, alock for locking the door in closed position, a solenoid for moving the door to open position, and means controlled by said lock for closing the solenoid circuit when the lock moves to unlocking position, electrical opera-ting means for releasing the lock, and manually operable means for releasing the lock.

12. In combination, a door movable to open and closed positions, means for locking the door in closed position, an elevator car, and a switch adapted for connection in the car control circuit, said switch being connected to said locking means and so constructed and arranged that when the door is locked the switch is closed and when the door is unlocked the switch is open, and means on the door for engaging-the locking means in all positions of the door except closed position and holding saidmeans in unlocking position unless the door is closed.

13. In combination, a door movable to open and closed positions, a lock-for locking the door in closed position, a solenoid for moving the door to open position, a solenoid for moving the lock to unlocking position, and control means for said solenoid circuits so constructed and arranged that the lock control solenoid will be operated prior to the door moving solenoid.

14. In combination, a door movable to open and closed positions, a lock releasably cngageable with the door for locking the door in closed positiomelectrically operated iieans for moving the door to open and closed position, electric circuits for controlling said means, and means controlledby a lock for closing the circuit of said door moving means to cause said moving means to open the door when the lock is moved to unlocking position.

15. In combination, a door movable to open and closed positions, a lock for locking the door in closed position, electrically operated means for moving the door to open position, an electric circuit for controlling said means, means controlled by the lock for closing the circuit of said door. moving means when the lock is mo \"cd to unlocking position, and electrical means for releasing the lock.

16. In combination, an elevator car, a car control circuit including a switch, a hatchway door movable to open and closed positions, electrical operating means for opening and closing the door, a control circuit for said door operating means including a switch, a door lock for locking the door in closed position, control means for said lock and means connected to said lock control means and to said switches constructed and arranged to close one circuit when the other circuit is opened and vice versa.

17 In combination, an elevator car, a car control circuit including a switch, a hatchway door movable to open and closed positions,

electrical operating means for opening and closing the door, a control circuit for said door operating means including a switch, a door'lock for locking the door in closed position, electrically operated control means for said lock and means connected to said lock control means and to said switches constructed and arranged to close one circuit whenthe other circuit is opened and vice" versa.

In witness whereof, I have hereunto set my hand this 1st day ofJune, 1927.

PETER J. DUGAN; 

